Watch the Modern Rock Voicings online guitar lesson by TrueFire from Play Rock Guitar 8: Advanced Rhythm Approaches
Modern Rock Voicings - Performance is a video guitar lesson presented by Carl Verheyen and is sourced from S.W.A.T. Rhythm.
This performance uses 3 note chords all over the neck that, when learned will give you many more options for playing Em. Notice the range: there are high voicings and low voicings taking in the entire guitar.